Middlings mill or grinder.



L. c. WINEGARDNER.

MIDDLINGS MILL 0R GRINDER.

APPLICATION FILED JUNE 28,1918.

1,286,865. Patented Dec. 3, 1918.

2 SHEETS-SHEET I.

L. c. WINEGARDNER.

MIDDLINGS MILL 0R GRINDER.

APPLICATIQN FILED JUNE 28.1918.

Patented Dec. 3, 1918.

2 SHEETS-SHEET 2.

ED STATES PATENT orato LLOYD C. WINEGARDNER, OF MUNCY, PENNSYLVANIA, ASSIGNOR TO SPROUT, WALDRON & COMPANY, OF MUNCY, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

Specification of Letters Patent.

MIDDLINGS MILL OR GRINDER.

Application filed June 28, 1918. Serial No. 242,444.

\ Mills or Grinders; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as w11l enable others skilled in the artto which it appertains to make and use the same.

This invention relates to grinding mills and more particularly to mills of the disk action type for grinding grain.

The primary object of the invention is to provide an improved middlings mill or grinder for use in reducing, granulating or disintegrating middlings after the first reduction by the use of rolls as now employed in flour mills, whereby abetter and more economical finish and a larger yield of flour may be obtained than is possible in the production of flour according to present methods.

The invention will first be hereinafter more particularly described, with reference to the accompanying drawings, which form a part of this specificatiom and then pointed out in the claims at the end of the descrip tion. f

In said drawings K.

Figure 1 is a side elevation of a grinding mill embodying my invention;

Fig. 2 is a'vertical sectional view of a portion of the mill shown in Fig. 1, parts thereof being broken away;

Fig. 3 is a side view of the rotating runer head;

being preferably journaled in ball bearings Fig. 4 is a vertical sectional view taken on the line 4.--4 of Fig. 3, looking in the direction of the arrows; and,

Fig. 5 is a side elevation of the stationary head or bur. v

Referring to said drawings, in which the Samereference letters are used to denote corresponding parts in different views, the letter A may denote the machine frame of my improved grinding mill having a casing A at one end inclosing a revolving runner head B, which is mounted on ashaft C, having a driving pulley D thereon; said shaft (not shown), and provided with means such as are ordinarlly employed 1n thls class of machines for controlling and ad usting the runner head. The runner head B, has attached thereto a grinding plate or plates 6,

which may consist of a solid annular plate or plates of hardened metal or steel such as are ordinarily employed in grinding mills ofthe same type surrounding the eye of the runner head, said plate havlng a grinding surface with radial grooves or ribs thereon adapting it to exert a rubbing rather than a cutting action and to turn over and break up the flaky and fibrous particles as they are carried along the corundum-like grinding surface of the adjacent stationary head.

plurality of arms 6 in this instance four, extend radially from and connect the hub of the head with the annular or peripheral portion thereof, said arms having flattened sides arranged at an angle to the axis of the head, so as to prevent inclined working faces adapted to gather in the material while revolving and cause it to enter evenly between the grinding surfaces and to break up any large lumps by rubbing and crushing them against the center of the adjacent head or grinding disk. Adjacent the hub of the revolving head I preferably provide a spiral blade or screw E, on the shaft C, to assist in feeding the material to the grinding disks. The stationar head or bur F, is preferably constructs with a central portion or circular plate of hardened corrugated metal or steel to provide a furrowed surface over which the material being reduced must pass before it enters between the grinding surfaces of the heads; the corrugations or furrows being preferably concentric with the axis of the head. The corrugations in cooperation with the inclined arms on the rotating head serve to reduce the larger lumps of grain to a suitable size for passing between the grinding surfaces of the heads and assist materially in the h 'gicrissibleto obtain and obviating the excessive smooth rolls, t e mill can be advantageously provided,

v grin ing late in cooperation with the-adjacent grin 'n g. surface of emerycement com-' position or corundum on the stationary head r at nabksghg z in to grind into flour the w. m 'fibm middlin'gs that heretofore have I go into feed, thus glving a larger yield of our per-bushel than it has heretofore been ictionaljheat incident to using grinding is heads as heretofore ordinarily constructed.

I I While specially designed and adapted tov -"grind middlin s after the first reduction on employed in grinding whole wheatat one Operation into perfectly fine flour or in fin ishing thefeed; To facilitate the entrance of thematerial between the grinding surfaces, a seriesfof grooves 0r furrows a are in thefilling of emery cement coins position 'and which-terminate short of the periphery of the head, being preferably arranged tangentially to the outer corrugation of the central platev as shown iniFig.- '5

of the drawings, so that the material must be reduced to a proper degree of fineness before it can. enter between the grindin faces of the rotating and stationary eads and f allinto the discharge lower side of said h ads. Y 4 .The' described combination of revolving at the bottom or '1 iheadwith harde ed met l aH'dOPPWdst tionary b face is desigifed with com um grinding surand adapted to .exert a -rubbing rather than acutting action, and espe-' l already 'artly reduced by running thro'u' h rolls an ,left in aflat'tened'out. andfla condition, sothat the material will not pass through the meshes of the silk or wire on which it is to .be bolted, but by passing it through this machine, it is subjected to a rubbing action, thus rounding up the material and. utting it into condition to pass through t e silk; It will be understood, of course, that various kinds of materials may he employed to provide: a stationary head having 'the desired grinding surface of corundum or the like, and in using the word cor'undum in the eagpended claims, I do not desire to be limit to such material but to include any suitable and equivalent com osition adapted to reduce an excessively a rdv abrasive or grin ingsurface. The mill may also be provided with two or more interchangea 1e stationary heads to adapt it to different kinds ofv work, such as grinding bran, whole wheat flour, middlings or cereals,

reducing the sanfie to fine flour at one operation, with the greatest possible economy of. power and operating rdened tion roducedby the hardened metal or teer grinding su tangentially cially in the reduction of middlings or wheat metal plate, annular v I g I metal'grinding-plates ofvarious constructions may also be employed for attaclm el t to the revolvin heads and while a solidcir- 3 cular platelis i iesirahle for; use ini'mills of small size, a plurality of grinding'plates or 70 quadrants may' be used and are preferable for the larger mills,-being" readily removable andinterchangeable so that they maybe easily replacedfwhen' worn or a; differentplalte substitutedfor different-matemast. 7

. --Having thusdes'cribedinventiomyvhat Ill .blaim as new. and; desire to secure-by f ters Patent of [the United States, is

1.. In; v grindin the combination" at V with a runner hea having a grin 'sur face "of hardened metal with re f ribs thereon, of a' stationary head having a ing surface of cor-und'um-like material. f 2. Inia grinding mill, 'a-stationaryrunner head coin rising'an annular bodyhaving a centrally 'sposed'plate of'corrugatedmetal audit-surrounding,- 7 surface of commdumflike-material; in combination with a revolving head having a radially ribbed .90

rface of hardened'metal confrontin said corundum-like surface, said' surface aving jinclined grooves therein extending from the outermost corrugation and terminating short 'of the periphery of the '95 head.--,

3.111 a grindingmill, a stationary head havin anJannular surface of excessiv'e y hard abrasive material,and

'tral circular corrugated plate;

a censurface having gr ves' therein extending to the outermost of said corru- -gatio1f1s an! terminatingfshort of the peripheryo sai gr 1ndmg .sur ace.

;4.-. I-In a grinding mill, a comprisinga. centrally .dis osed y encircling said plate and having a surface of rundum-like materi said surface having furrows therein. arranged tangentially to the outermost of said corrugations and terminat- 'ingf'short of the periphery of said sur ace.

- 5. In. combination, a stationary but having a centrally disposed corrugated plate and an annular body encircling said plateand having a surface 'of corundum-like M material, said'surface having furrows therein which extend tangentially from the outermost of, said corrugations and terminate short of the periphery of said surface, and a revoluble runner head having a ding plate thereon of hardened metal facing the grinding surface of said stationary head, and also having radially disposed arms with flattened fsides arranged at an angle to its axis and connecting its annular body and hub' for cooperation with said corrugated plate in crushing material therebeo tween.

grindstationary bur 1015 a pair of millstones having confronting grinding surfaces, one of hardened metal and the other of' corundum-like materialysaidv metal-surface having an annulafr series 0; radiall disposed ri s thereon acing sai corundlimdike ding surface. v

7.'In a mill, a stationary head comprising an annular bodyhaving on one side thereof a grinding surface of corundumlike material, and 'a centrally disposed smooth-surfaced corrugated plate; said corundum-like surface ha grooves therein extending laterally thereof.

8. In a grinding mill a grinding head com:

' prising a centrally disposed metal plate having a series of substantially concentric grooves or-cor'rugatlons therein and an annular body surrounding said plate and havmg a grindingsnrface of corundum-like material, said surface having grooves therein extending corru ations.

substantially tangentially to said 9.; combination, a stationary head havl ing a surface of corundum-like' material, said surface having furrows therein which extend laterally thereof, and. a re tating head having a grinding surface of hardened metal constructed with an annular semes of radially disposed ribs facing the corundum-like surface of said stationary head; said ribs being adapted to carry or move the material under treatment along said corundum-like grindin surface. Intestimony whereof I a x my signature in the presence of two witnesses. LLOYD C. WINEGARDNER. Witnesses: Y

Srnrnnn'Souns, J. Russnu. Sm'm. 

